base of metacarpal bone

例句：

1. 1.The doctor examined the patient's handand found a fracture at the base ofthe metacarpal bone.
   医生检查了病人的手，发现在手骨的基底处有骨折。
2. 2. During the surgery, thesurgeon carefully removed the base of the metacarpal bone to repair the injury.
   手术期间，外科医生小心翼翼地切除了手骨的基底以修复伤情。
3. 3. After theoperation, the patient was advised to avoidheavy lifting and to keep the base ofthe metacarpal bone immobilizedfor several weeks.
   手术后，患者被建议避免重举并保持手骨基底固定数周。